This is the ninth in a series of articles from The Underwear Expert 

Last year saw an influx of "bad-boy" underwear models step up to the plate. Many underwear brands employed non-Ken doll types for their campaigns in '12, and independent photographers and publications published hordes of photos that reminded us that deep down, all we really want is a bad boy. Well, maybe not so deep down. Five stand-out hardasses made a bigger splash than most, and we're here to request that we see a whole lot more of them this year. Check them out below; would you hop on their motorcycle, take a drag of their cigarette, or help them trim their chest hair? That's what we thought...

#5 Levi Jackson

Credit: Jorge Rivas

#4 Bruno Fernandes

Marcio Del Nero

#3 Diego Fragoso

Credit: Felix Mercedes

#2 Ricardo Veia

Credit: Ismael Prata

#1 Steven Chevrin

Credit: Jeff Hahn